Balanced valve



MalCh 21, 1933. R, MURRAY 192y336 BALANCED VALVE Filed Nov. 25. 1930 2 Sheets-Sheet l H TORNEY March 2l, 1933. R- MURRAY y 1,902,336

BALANCED VALVE Filed Nov. 25, 1930 2 Sheets-Sheet 2 INVENTOR Ra'lFhLP/Imay.

y HIS ATTORNEY Patented Mar. 21, 1933 j RALPH L. MURRAY, OF PHILADELPHIA, PENNSYLVANIA.

' BALANCED vALvE Application lea'noveinber 25, 1930. serieu No. 497,972.-

Thlis invention relates to valves, and has for an object to provide a valve balanced in a new and improved manner.

A further object of the invention is to provide a valve organization, having a valve member slidable therein, and subjected to the incoming Huid upon oppositely positioned sides, and to the outflowing fluid upon oppositely positioned ends, to completely balance the valve member.

1t is well known, that in the distribution of fluids, under high tension and velocity, the valves are subjected to great stress by reason of the pressure 4and impact of the uid on the presented parts, and especially upon the movable valve member. It is customary to present the incoming Huid to one side of the valve member, and when the valve is balanced, in regard to longitudinal movementof the valve member, it is not equally balanced in regard to side pressure. The present invention involves a valve housing, having an inner chamber, through which the valve member slides, and'into which the incoming fluid is introduced upon diametrically opposite sides of the valve member, so that the said valve member is equally subjected to the impact and pressure of the incoming Huid upon opposite sides, and balanced, and passing through openings in the valve member to balance the pressure at opposite ends, so that irrespective of the tension or velocity of the fluid, the valve member will always move unimpeded.

The invention further involves the production of improved mechanical means for actuating the valve member.

The invention Iis directed to other objects and possesses other features of novelty and ad vantage, some of which, together with the foregoing, will be hereinafter more fully set forth.

n the drawings Figure 1 is a sectional view taken diametrically through the inlet and outlet ports, and on a plane which would be substantially vertical as a valve lis ordinarily mounted,

Figure 2 is a transverse sectional view, taken on line 2-2 of Figure 1, and

Figure 3 is a transverse sectional view, taken on line 3 3 of Figure 1,both Figures 2 and 3 showing the section linesof Fig` ure 1. v

Like characters of reference indicate corf responding. parts. throughout ,thel several vlews. A j j l l The improved valve, which forms the subject `matter. of thisA application, is particularly designed for large installations,

carrying great volumes of fluid under high pressure, and at great velocity. It is, of course, not limited in its utility to any sizes, and will include the smaller sizes. *j

The organization comprises a'housing 10, having an inlet port 11, and an outlet port 12, with the usual flanges 13 for connection with abutting conduits. Y

The housing 10,-normally open at the bottom, is provided with a cap 1a whichzis secured thereto in any usual and ordinary manner, and with a dome 15. The. dome 15 lis preferably provided with a flange 16, which issecured to the housing vby bolts` 17, or their equivalents.

Within the housing, a partition '18 is erected,'bowed as at 19 to form one,` side of an internal chamber 20, the opposite side ofy which is provided by va bathe 21, preferably having a pointed extremity 22 extending diametrically of the inlet port 11. `This chamber 20, communicates throughthe port 23, with branches 24 and 25 of the inlet passage, so that the fluid incomin through the inlet port 11, is divided by a affle 22, and enters through the ports 23, to the chamber 20.

The chamber 20 iswopen at the top andV bottom, and a valve member26 is .longitudinany sudati@ `therethrough. Prefer. ably, bushings 27 and 28 are provided as walls 31. As the valve is raised, therefore,-

fluid will pass from the chamber, 'throughthe openings in the valve, and will be discharged through the uncovered angular openings at the top of the valve, and will also flow through similarly uncovered angular openings at the bottom of the valve, and in both instances, Will pass into the chamber 23 which is in communication with, and a part of the'outlet port l2.

The cap 14 is provided With a pinr33, upstanding therefrom, and in position to engage adjustably aga-inst the bottom of the valve 28 in its lowermost position, the valve being preferably provided with a boss 34, cast integral therewithy for engagement upon the top of the pin.

At its upper end, the valve member 28 is provided with a sleeve 35 which is internally screw threaded, and a nut 36 engaged therein.

and is held from rotation, when seated, by the diametrical pin 37. This nut 37 carries upstanding spaced ears 38, between which a link 39 is pivoted by the pin 40. This link 39 is pivoted at 41j to a link 42, the pintle 41 being at right angles to the pintle 40. Y The link 42 is pivoted at 43y to an armI 44, which arm 'is provided with a hub 45, and is seated upon the squared part 46, of the shaft 47.

The shaft 47 extends through a gland 48, carried by a nut 49, and has a reduced part 50, fulcrumed in a nut 51. The nuts 49 and 51 are similarly threaded, and adapted for interchange, so that the end of the shaft 5() may extend in either direction according to the way it is mounted, and the convenience and requirements of use. The shaft47 is provided with a socket 52, into which a handle, or lever 53, may be introduced for actuating. the valve.

Ithas been the experience ot-makers and users of valves for like' purposes, that the excessive pressure and velocity of the liuids, controlled by' suchy valves, when impinging against the' valve member, causes a rapid rotation of the valve member within ther housing, and this wears the contacting parts so that it readily and quickly becomes useless. The present invention' provides for retaining the valve' member against rotation by the' use of the linksv 42 and 39, the valve being fulcrumed to the link 39 at right angles to the fulcrum between the links 39 and 42 to form substantially a universal' joint, but at the same time, prevent a rotation of` the valve by reason of the pin 37,

` securing the nut 36, to the sleeve 35.

It is believed, that the utility, installation and operation of the device will be fully understood from' the foregoing description,

and theseveral suggestions of use already V included therein. .Y

Of course, the invention herein illustrated, may be modified in various ways without departing from thel invention hereinset forth and hereinafter7 claimed..

arm on the shaft Within the housing, links Jfrom the arm to the valve interconnected by aV pi'ntle, and a pintle perpendicular to the first mentioned pintle pivoting the ter- Y minal link to the valve, said links and pintles forming substantially aV universal joint between the arm and valve.

In testimony whereof I have signed my name to this specication.

RALPH L. MURRAY. 

